SOLO disk and tape images added

Image sources:

http://www.bitsavers.org/bits/DEC/pdp11/Brinch_Hansen_SOLO/solo.dsk

http://www.bitsavers.org/bits/DEC/pdp11/Brinch_Hansen_SOLO/soloDiskImage.tap
ftp://ftp.informatik.uni-stuttgart.de/pub/cm/dec/pdp11/solo.rk05